Machine for forming and setting flat metal barbs



(No Model.)

^ A. J. BATES.

MACHINE EOE EORMING AND SETTING ELAT METAL BARES. No. 318,079. Patented May-19.1885.

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UNITED STATES PATENT GEEICE.

7 ALBERT J. BATEs, OE JoLiET, rLLiNois.

MACHINE FOR FORMING ANDSETTING FLAT METAL BARBS.

SPECIFICATION forming part of Letters Patent o. 318,079, dated May 19, 1855. Application filed December 20, 1884. (No model.)

To all whom, it may concern:

Be it known that I, ALBERT J. BATES, a citizen of the United States of America, residing at Joliet, in the county of Vill and State lot' Illinois, have invented certain new and useful Improvements in a Machine for Forming and Setting Flat Metal Barbs, of which the following is aspecitication, reference being had therein to the accompanying drawings.

Figure l is a perspective View. Fig. 2 is a plan view on the top of the bed-plate ofthe machine which supports the dies. Fig. 3 is a front view of Fig. 2, looking at it in the direction indicated by the arrow z; Fig. 4, a perd spective view of a barb and a portion of the barb-strip, showing a finished barb placed between the two strand-wires, and showing one prod of the next succeeding barb formed in advance of its being applied to the strandwires; and Fig. 5, an end view of the die c and a side view of a portion of the punch P,in dotted lines, that splits the advance point of the barb-strip to form the two advance prods of the barb.

This invention relates to certain improvements in a machine for cutting, forming, and setting fiat metal barbs between a -pair of fence-wires for fence purposes, the construction and operation of which is set forth and described in the following specication and claims.

Referring to the drawings, Drepresents the bed of the machine supported on suitable legs, and supporting on its upper surface the bedplate D, secured thereto by means of suitable bolts or screws passing through the bolt-holes h, as shown in Fig. 2. In the rear of bedplate D is a frame, F, in which is boxed a pair of shafts, one above and one below said bedplate,parallel with each other and geared together at their rear ends by means of the cog-wheels G G', of equal. diameters. The upper shaft is provided with the loose pulley A and also the fast pulley A', to which the power is applied to drive the machine. The inner ends of said shafts are respectively provided with the crank-pins t and t, passing through sliding boxes, which respectively traverse the horizontal rectangular openings or slots in the respective sliding heads H and H', by means of which said sliding heads are reciprocated i vertically simultaneously as said shafts rotate.

The crank-pins tandv t are set on their respective shafts so that they'will reciprocate said sliding heads` to and from each other, so that all the punches do their cutting at the same time, The upper sliding head, H, is provided with the vertically-set cutting-punches P P,

,and the lower sliding head, H,is provided with the verticallyset cutting-punch P2. The corresponding cutting-dies a c c are shown in Fig. 2, and are held in their places by the plates a and m. Proper set-screws at their rear ends furnish means for setting said dies up to the punches, and wedges y, y', and V furnish means for their lateral adjustment.

Punch P cuts in conjunction with die c. Punch P cuts in conjunction with die c, and punch P2 cuts in conjunction with die a from below.

A gage, d, (shown in Figs. 2, 3, 5,) is set in the bed-plate D and held in proper position 4by means of the cap-plate N. Its inner end lies on the upper side of the-inner end of die c, asshown in said gures, and is beveled, as shown in Fig. 2, to conform to the shape of the pointed end of the barb-strip S, and is for the purpose of guiding said pointed end of said barb-strip and holding it properly until punch P and die c can split it to form the two advanceprods l and 2 ofthe barb.

The strand-wires w w pass into the machine, one from each side, over sheave-wheels placed in the sides of the machine and meet and cross the bed-plate D, one immediately above the other, as shown in Fig. 2, and at right angles with the barb-strip S, which is fed in intermittently between a pair of feed-rolls, k, operated by means of the ratchet R and pawl o, through the medium of connecting-rod a', attached to a crank-pin on the outer end of the lower shaft.

The machine is so timed that when the barbstrip S has been fed forward so enough of it to form a barb lies between the two strandwires, as shown in Fig. 2, the punches all move simultaneously toward their respective dies to cut and form the several prods of the barb, the result of which is that the punch P and die c split the pointed end of the barbstrip and form the two advance prods I and 2 of the barb. Punch P' and die c cut and IOO ` succeeding barb before the form the prod 4, and punch P2 and die a cut and form the prod 3 of the next succeeding barb,which becomes prod3ot` the finished barb, as shown in Fig. 4.

A single operation of the punches and dies produces a finished barb and forms a prod on the next succeeding barb, as is shown in Fig. 4 in perspective, and by the dotted lines in Fig. 5, and leaves a finished barb lying between the strand-wires, which are being twisted continuously as the barb is being formed and placed between them, and immediately twist upon the barb to hold it in. The strandwires also travel forward continuously and draw the wire along far enough for the next punches and dies form another. 'i i The form of the several punches and dies is such that at each operation they cut and bend the prods of the barb in the form shown in Figs. 3, 4, and 5. By thus forming the prod 3' of the next succeeding barb in advance, before prod 4 is formed, the barb being formed between the strand-wires is held in place and supported by the barb-strip S while the ad- Vance barb is being formed by punches P P' and dies c c'. 'Ihe strand-wires are drawn from the machine and twisted together by means of an ordinary twister and spooler, (not necessary to be shown.)

The die a, which forms a shear with punch P2, is square on its cutting end, while punch P`Z is formed to be at a slight angle at its cutting end and is rounded at its heel or part next the base of prod 3', and will, after the prod has been cut from the strip and as its rounded part engages with the base of saidl prod, bend it up at an angle of about fortyfive degrees. n

The punches P and P', working from above, are of the same form on their cutting ends, and cut and bend down prods 2 and 4 in the same manner as prod 3' is bent up.

The die c', which forms a shear with punch P to split the advance point of the barb-strip S to form the prods l and 2, has the portion of its cutting end which vengages the heel or rounded part of the cutting end of punch P beveled, as shown in Fig. 5, at c2, and as the said prods are being split apart and as far up as to the beveled part c2 of die c', prod l lies flat on die 0'; but when said punch passes down past beveled part c2 of said die the body of the barb must be carried down and the barb be slightly rotated in the direction the strandwires are being twisted. The result is prod l is bent upward and the body of the barb rotated slightly forward, as shown in Fig. 4 and by dotted lines in Fig. 5. By thus partially rotating the barb its rear prods will be elevated enough so that when the barb is being carried forward by the strand-wires prod 3 will not catch on the point of the barb-strip S. By this arrangement of punches and dies, operated as shown, it becomes possible to cut, form, and set automatically four-pointed at metal barbs between a pair of strand-wires.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. The machine for cutting, forming, and setting at metal barbs, consisting of the bed D', bed-plate D, sliding heads H H', shafts and crank-pins for operating said sliding heads, gear-wheels G G', punches P P' P2, dies c c' a, gage d, feed-rolls K, and their operating parts, all arranged to operate as and for the purpose stated.

2. In the machine described for cutting, forming, and setting fiat metal barbs, the combination of the punches P P' P2 and dies c c' a, and the means described for operating said parts, as and for the purpose set forth.

3. The means described for cutting, formy ing, and setting between a pair of strand-wires a four-pointed at metal barb, consisting of the punches P P' P2 and dies c c a, supported and formed substantially as shown and arranged, to operate as specified.

4. In combination with the bed-plate D andY the punches and dies for cutting a four-pointed flat metal barb, as shown and described, the gage or guide d, arranged and formed as and for the purpose set forth.

5. In the machine for making lflat metal barbs described, the train of punches and dies arranged and formed, as shown, to out and form three prods of a barb while between two strand-wires, and simultaneously cut and form one rear prod of the next succeeding barb, as set forth.

ALBERT J BATES.

Witnesses:

Trros. H. HUTcHINs, A. S. FELT.

IOO 

